The main theme of the report is promoting sustainable ocean economies through guidance for international development cooperation.
The report emphasizes the importance of oceans for economic development, climate action, and biodiversity conservation. It highlights the role of oceans in supporting the livelihoods of coastal communities, regulating the climate, and providing rich marine biodiversity. The document also links sustainable ocean development to Goal 14 of the 2030 Agenda for Sustainable Development ('Life Below Water').